HT4718 yosemite recovery failed and disk no longer recognized

Hi everyone,
I've installed yosemite, no problem at first time.... yesterday i've turn on mb pro, closed the notebook during boot time... ->error.
Now the OS don't start end still remain at middle loading, then I've tried the recover (command+R).
Well, the recovery don't see the disk, the disk utility can't repair the partition (activation point missing) and ther's no way to fix it...
Trashing disk is the only way?

Hi Id0,
If Disk Utility reports errors that it is unable to repair, one of two things have occurred. In either case you will want to attempt to (ifyou have not already) back up any important files as soon as possible.
One way that may allow you to back up is to connect another Mac to this one and use Target Disk Mode. See this article -
OS X Mountain Lion: Transfer files between two computers using target disk mode
Note that while the article title says Mountain Lion, the procedure is valid for other operating systems.
Once you have backed up your files as much as possible, you will want to erase the drive. See this article for how -
OS X: How to erase and install
If this succedes you can bring your data back from the other computer.If not, then the hard drive has failed physically and will need to be replaced. You can contact Apple for this using information here -
Contact Apple Support
Thanks for using Apple Support Communities.
Best,
Brett L

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HT4718 yosemite recovery failed and disk no longer recognized

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